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Prime and Composite Numbers Unit

This comprehensive unit includes 4 lessons that cover the entire common core standard for 4th grade on prime, composite, factors, and multiples.

It includes the following lessons:
Lesson 1:
Vocabulary Development
factor, multiple, prime, composite, factor pair, product
Teach vocabulary using gestures and playing a vocabulary concentration game.

Lesson 2:
Find all factor pairs for a whole number in the range 1–100. Recognize that a whole number is a multiple of each of its factors.
Teach students how to find factor pairs using arrays for all numbers 1-100. This lesson is hands-on and visual.

Lesson 3:
Determine whether a given whole number in the range 1–100 is prime or composite.
Students use cubes to find the factors of several numbers and then decide if it is prime or composite. Students are asked to justify their response in writing too.

Lesson 4:
Determine whether a given whole number in the range 1–100 is a multiple of a given one-digit number.
Teach students how to find multiples of a number by playing a game of "Multiples High Five Tag" out on the field or in an open area. This game is great for the kinesthetic learner in us all!

A 10 question assessment based on the week's lessons.

Download to the preview to view the entire unit.

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